package cn.itcast.controlle;

import cn.itcast.pojo.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.util.List;
import java.util.Random;

@RestController
@RequestMapping("consumer")
public class ConsumerController {
    @Autowired
    private RestTemplate restTemplate;

    @Autowired
    private DiscoveryClient discoveryClient;

    int index=0;

    @GetMapping("{id}")
    public User queryById(@PathVariable("id") Long id){
        //获取服务列表
        List<ServiceInstance> instances = discoveryClient.getInstances("user-service");
        //随机轮选
        int index = new Random().nextInt(instances.size());
        ServiceInstance instance = instances.get(index);

        //获取ip和端口
        String host = instance.getHost();
        int port = instance.getPort();

        //请求路径
        String url = "http://user-service/user/" + id;

        User user = restTemplate.getForObject(url, User.class);
        return user;
    }
}
